Reviews and Problems with Canon EF 70-300mm f/4-5.6 IS USM
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Value for money 8
Overall quality 5
Build quality 5
Canon EF 70-300mm f/4-5.6 USM IS - Full Format Lab Test / Review
15 June 2010
Conclusion: The Canon EF 70-300mm f/4-5.6 USM IS is a decent performer and a great value offer. It is capable of delivering superb results at 70mm (for a slow speed lens) and it's still pretty good at 200mm and even 300mm. The vignetting is comparatively moderate even at max aperture.